JAPANESE GAMER wrote:Sorry, I forgot to give a concrete example.
I want to know where is the last puadparts "Book".
But…the question was already appeared in "Feedback" board.
I'm very sorry to trouble you.

No problem at all - I'm not sure where is best for these questions either (wasn't expecting many).

Anyway, finally found the answer - on the tunnel between town and the castle to the east there is an ant nest. Deep in the south east corner of that is the egg chamber where a chest containing the book is to be found.